Apps similar to Tier S Ideas include Dream Novel, which is free. Other options are KoboldCpp, 1667, Wordtune and NovelAI. AI Writing Tools like Tier S Ideas are a crowded field, with more than 25 alternatives for the web, Android, iPhone, iPad and Windows.
Choose a world, create a character, and write your next move. Mythora is a free-to-start AI text RPG with adventures you can continue across sessions.
South Korea
LLM RPG ingests a novel you supply (.txt or .epub, up to 10 MB) and runs a batched extraction pass over it, building a structured atlas of the book's characters, factions, locations, items and events.
Indonesia
Extypis is a writing studio built for the long haul — novels, theses, essays, poetry collections, screenplays, in-depth blog series. Anything that falls apart in Google Docs past chapter twelve.
France
EU
Draftly is an AI writing tool that critiques your drafts and provides editor-style feedback to improve clarity, structure, and voice.
WriteABookAI helps professionals and experts transform their domain knowledge into polished non-fiction books using an AI-Native writing interface. It eliminates the complexity of book writing while maintaining the author's expertise and voice.
CharmWriter is a voice-first AI ghostwriter for storytellers who are not writers. You speak your story out loud and it becomes a finished book, while a living Story Bible keeps every character, plot thread, and date consistent across hundreds of pages. EN, UK, CS.
CzechiaEU
Germany
